﻿/*   
    Copyright (C) 2009 Galaktika Corporation ZAO

    This file is a part of Galaktika.BusinessMonitor
 
    Galaktika.BusinessMonitor is a free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
      
    You should have received a copy of the GNU General Public License
    along with Galaktika.BusinessMonitor.  If not, see <http://www.gnu.org/licenses/>.
  
    If GPL v.3 is not suitable for your products or company,
    Galaktika Corp provides Galaktika.BusinessMonitor under a flexible commercial license
    designed to meet your specific usage and distribution requirements.
    If you have already obtained a commercial license from Galaktika Corp,
    you can use this file under those license terms.
*/

using System;
using System.Collections.Generic;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;

namespace Galaktika.BI.Silverlight.Controls
{
    public static class ChartControlExtensions
    {
        public static IEnumerable<DependencyObject> GetVisualDescendents(this DependencyObject parent)
        {
            if (parent == null)
            {
                yield break;
            }

            // Use a queue to recurse over the descendants
            Queue<DependencyObject> remaining = new Queue<DependencyObject>();
            remaining.Enqueue(parent);
            while (remaining.Count > 0)
            {
                DependencyObject obj = remaining.Dequeue();

                // We included the parent in the queue to initialize the
                // recursion, but we shouldn't return it
                if (obj != parent)
                {
                    yield return obj;
                }

                // Add the children of the object to the queue
                int count = VisualTreeHelper.GetChildrenCount(obj);
                for (int i = 0; i < count; i++)
                {
                    DependencyObject child = VisualTreeHelper.GetChild(obj, i);
                    if (child != null)
                    {
                        remaining.Enqueue(child);
                    }
                }
            }
        }
    }
}
